Chair for x-ray work



y lMZY,

R. LEVENSON.

CHAIR F0 Jan.. 9, 1923,.

R X-HAY WORK.

FILED JULY 28.1921.`

llStBlER' LEV'ENSON, 01E YORK, lll. Y., ASEllKGrNUR F @NE-HALF '.ll() lll/EUHRIS EUKER,

` @F NEW YURK, Ill'. Y.

ClEiEAiElI-t Ta-RAY WORK.

Application filed July B,

.To all 'whom t may concern:

Be it known that l, Roemer Lnvnnsoiv, a citizen of the United States, and a of the borough of lllianhattan, city, county, and State of New Yiii'lr,'lizi,ife invented certain new and useful. improvements in Chairs for lili-Ray VVorlr, of which the following is a specification.

This invention relates to improvements in chairs for X-ray work.

Une of the objects of this invention is to produce a chair for use with X-ray apparatus whichwill provide means for the accurate positioning and supporting of the patients head in all the varying positions necessary to procure proper K-ray photographs of different portions thereof.

Another object of mv invention is to provide a chair of the character specified which may be manufactured at a low cost, which will be sanitary and simple in operatii'in.

Another object of my invention is to provide means for engaging` and guiding the patients head at three points, namely, at opposite sides and the top so as to limit movement in all directions and aid in precise posi'tioning and supporting thereof during the operation of taking the X-ray photog 'aphs Another object of my invention is to provide means in combination with a chair seat for supporting the body and a head-rest for positioning the head, of an adjustable armengaging member at one side of the chair for engaging the elbow of the patient to assist in retaining his arm in any suitable ele vated position.

Another object of my invention is to provide a head-rest for lil-ray work embodying hinged members which will be capable of assuming positions in angular relation to each other for contact with the opposite sides of the back of the head when in vertical or substantially vertical position, and which members may be flattened out into alignment or registration with each other for Contact with and support of one side of the head in horizontal or inclined position.

Another object is to utilize a cap pad in combination with such foldable hinged `members for engaging the top of the patients head in either position and to assist `in guiding and positioning the same.

Another object of my invention is to provide a sanitary head-rest composed of a transparent material such as glass backed resident 1921. Serial lilo. 488,204.

up by a sheet of material impervious to X-rays, such as sheet lead.

1With these and other objects in view, the invention comprises the combination of members and arrangement of parts so combined as to co-act and cooperate with each other in the performance of the functions and the accomplishment of the results herein contemplated, and comprises in one of its adaptations the species or preferred form illustrated in the accompanying drawings, in which i Fig. 1 is a front elevation of a chair embodying my invention;

llig. 2 is a side elevation of the chair shown in Fig. l; Y v Fig. 3 is a plan, view of the chair shown in Figs. l, and 2;

Figa is a view in side elevation of a portion of the back of the chair and head-rest when its members are liattened out and swung into horizontal position;

l? 5 is an enlarged top plan view of the head-rest and adjustingmeans for the leaves thereof;

F ig. G is an enlarged rear elevation of the head-instand adjusting means therefor; and

ldig. i is a cross-section through the headrest 0n the line fil-7 of Fig. l. j

Referring now to these drawings, l indicates the base or supporting frame of the chair which is of the usual type and is preferably supported by leg members 2. Said base has, as illustrated, a centrallylocated screw-threaded socket 3 in which is threaded a screw 4.-, on the upper end of which is mounted a chair-seat 5 preferably having the form shown in plan in Fig.. Il. ldaid chair seat .has7 as shown, rigid vertically-disposed bac; li fixed thereto. Two sockets 7 and 8 are mounted on the rear side of thisback (i. Through the sockets 7 and 8 extends an adjusting rod or bar 9, at the upper end of which is mounted a head-rest l0 which is pivoted to swing about a horirontal pivot lOL. The bar 9 and sockets are preferably so positioned in relation to the rear of the chair that the head-rest 10, when in vertical position, will register or `be in verticalV alignment wth the bach of the chair 6. As illustrated, the head-rest 10 comprises two hinged members or leaves ll and l2 respectively which are hinged together onl a hinge pintle 13 which7 as illustinted, is supported at opposite ends in a yoke-bracket 14. The pivotal movement of the hinged leaves 11 and 12 on the pintle 13 is preferably controlled by arcuate arms 15 and 16 fixed at one end to the said leaves and having the opposite free ends extending throuo'h a slot 17 formed in the yoke bracket 14. frs illustrated, these arms overlap at their ends and are simultaneously fastened in place by a screiv 1&3 provided with a knob or handle 19. These arms permit the pivotal swinging of the leaves to any degree of relative angular inclination to cach other or into registry or alignment with each other. lt Will be understood that it desirable in taking viays of the javvs for dental Work to have the loaves turned at an angle to each other so as to form rests for the opposite sides of the back of the head and also toy retain the head rest substantially vertical alignment with the back of the chair.

In practice7 l prefer also to provide means for contacting vvith the top of the head to limit the movement in upward or vertically swinging position and for tl is purpose provide the cap pad 2O which preferably ei-:f tends from the yoke bracket outwardly and centrally above the leaves of the head-rest and forms a stop for the top of the head to assist in positioning the ame and to guard against upward or vertically swinging movement.

It is frequently necessary to take X-rays when the head is in substantially horizontal or inclined position With the side of the face supported, and for this purpose l have provided for the vertical swinging into rhorizontal position of the head rest and the flattening 'out of the hinged leaf members. The bodily movement of the head-rest is preferably accomplished by pivotally mounting the supporting bracket 1e and for this purpose l provide knuckles 21 and 22 respectively on the bracket 14e and rod 9 respectively and pass therethrough. a tiglrtening screiv 23 provided with a knob or handle 24. ln order to determine the exact degree of inclination in any given case, l. preferably provide on one of the knuckles or socket of thebraoket a series of graduating marks 25 and on the rod l provide a pointer or indicatingmark 26, thus enablin the operator to adjust his head-rest to any exact degreeof inclination desired between the horizontal and vertical.

ln chairs of this character it is frequently necessary to cause a patient to place his linger in his mouth for the purpose of retaining therein a film in order to pro-- cure X-rays of the teeth and jaw. fr nervous patient frequently causes the film to be moved out of position and it is, therefore, desirable to support the patient-s arm during the retention of the film in his mouth and for this purpose l have provided armretener supporting pads ai each of vvhich adjustable vertically so as to contact with and enone of the arms of the patient to support the saine in any position fixed by the operator, While the other arm pad is lowered into contact with the seat and out of' the Way. Each pad Q7 is mounted upon a, long rod 28 which extends through a bore 29 in the seat of the chair so that each rod may be moved independently from a positien contacting with the chair seat to a position adjacent to the top of the chair back. lilach of the said adjusting rods 28 may be locked in position by tightening screws 2li) having knobs or haiulles o1.

lt is desirable in work of this character that the head rest and chair be sanitary ain/.l easily cleaned and also that the material of the lui-ad rest be surli an to resist 'the pas- 'X-rays to serve as protection nst such rays. and to this end each of ne said leaves preferably composed of e frame a backing llb of lead or like ray resisting material and a surface layer ,ss llc or similar material. :laving described my invention, l

cl in'i:

1. An X-ray chair embodying`r in combinatiomy a base. a seat rotatably mounted tlieiemr4 a hack fixed to said seat, a huidrest mounted on said back to have vertical sliding` movement and composed of a plu- 'ality of flat hinged members movable relatively to each other from angular disposition imo a single plane and means for movinfgr .raid head-rest bodily in an arcuate path from vertical to horizontal position.

2. rien X-ray chair embodying, in rombiuation, a base, a seat rotatably mounted thereon, a back fixed to said, seat` a headrest mounted on said back to have vertical sliding movement and composed of a plurality of flat hinged members movable relatively to each other from angular disposition into single plane, means for moving said heaifla-est bodily in an arcuate path from vertical to horizontal position and a rap pad mounted on said head-rest adapted io conN tact with the top of the l -ad o'l" a person seated therein.

3. An X-ray cha-ir embodying, in cembination7 a base, a seat rotatably mounted thereon, a back fixed to said seat, a head-rest mounted on said hack to have vertical slid in; movement and composed of a plurality of dat hinged. members movable relatively to each other from angular disposition into a. single plane, means for movingsaid headrest bodily in an arcuate path from vertical to horizontal position and an adjustable arm support for engaging one arm of the person seated in said chair to retain the same in elevated position.

fl. rien h-ray chair` embodying. in combination, a base, a seat rotatably mounted Sti iaiaaoa? thereon, a back fixed to said seat7 a rod mounted on said back to have vertical sliding movement; a bracket adjustably Inounted on said rod to swing rearwardly and forwardly in relation to said chair back; a hinge pintle mounted in said bracket; and leaves pivotally mounted on said pintle7 and means for fastening said leaves in varying positions.

5. An t-ray Chair, embodying, in combination7 a base, a seat rotatably mounted thereon1 a back fixed to said seat, a rod mounted on said back to have vertical sliding movement; a bracket adjustably mounted on said rod to swing rearwardly and forwardly in relation to said chair back; a hinge `pintle mounted in, said bracket; leaves pivotally mounted on said pintle each having a backing of a material impervious to Xfrays and a facing' of glassy material.

6. An i-ray chair embodying, in oombination, a base, a seat rotatably mounted thereon, a back fixed to said seat, a rod mounted on said back to have vertical sliding movement; a bracket adjustably mounted on said rod to swing rearwardly and forwardly in relation to said chair back; a hinge pintle mounted in said bracket; two flat leaves pivotally mounted on said pintle, means for fastening said leaves in varying positions and a cap pad mounted on said head-rest above said hinge pintle.

7. An X-ray chair embodying, in oombination7 a base, a seat rotatably mounted thereon, a back fixed to said seat, a rod mounted on said back to have vertical sliding movement; a bracket adjustably mounted on said rod to swing rearwardly and lng movement; a bracket adjustably mounted on said rod to swing rearwardly and forwardly in relation to said chair back; a hinge pintle mounted in said bracket; two flat leaves pivotally mounted on said pintle, two arc-shaped bars fixed to each leaf at one end and having the opposite free ends pass* ing through a common slot and means for fastening said free ends to fix the position of said leaves in relation to each other.

In Awitness whereof, lf have signed my name to the foregoing specification in the presence of two subscribing witnesses.

' ROBERT LEVENSON.

Witnesses:

FREDERICK P. RANDOLPH, JULIUs H. Ln'rz. 

